What was Palestine originally?

It depends on how far back you wish to go. The earliest archaeology dates settlements near the city of Haifa from 100,000 years ago. It then passed hands to early tribe, Proto-Canaanites, Canaanites, Israelites, Philistines, Egyptians, Assyrians, Babylonians, Persians, Macedonian Greeks, Egyptian Greeks, Syrian Greeks, Hasmonean Jews, Romans, Byzantines, several different Arab Caliphates and Turkish Empires, Crusader States, the Ottomans, the Britons, and finally Israel and modern Arab States.